Video: Dab tsi yog qhov sib txawv ntawm cov duab kos duab?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Ib lub koom haum tuaj yeem muaj npe, thiab qhov kawg ntawm lub koom haum tuaj yeem dai nrog cov npe ntawm lub luag haujlwm, cov cim qhia txog kev ua tswv cuab, ntau yam, pom, thiab lwm yam khoom. Muaj plaub ntau hom Kev sib koom ua ke: bi-directional, uni-directional, aggregation (nrog rau kev sib sau ua ke) thiab kev hloov pauv.
Yog li ntawd, kev sib raug zoo hauv chav kawm ntawv yog dab tsi?
Kev sib raug zoo hauv cov duab kos duab . Hauv UML, a kev sib raug zoo yog kev sib txuas ntawm cov qauv tsim. Ib UML kev sib raug zoo yog ib hom qauv qauv uas ntxiv semantics rau tus qauv los ntawm kev txhais cov qauv thiab tus cwj pwm ntawm cov qauv qauv. Koj tuaj yeem teeb tsa cov khoom thiab siv cov ntsiab lus los tsim cov kev hloov pauv ntawm cov no kev sib raug zoo.
Tom qab ntawd, lo lus nug yog, dab tsi yog qhov sib txawv ntawm kev sib raug zoo hauv UML? Kev sib raug zoo hauv UML tso cai rau ib yam los cuam tshuam nrog lwm yam hauv lub cev. Ib kev koom tes , dependency, generalization, thiab kev paub kev sib raug zoo yog txhais los ntawm UML. Kev sib xyaw ua ke kuj tuaj yeem siv los sawv cev rau qhov khoom ntawd tuaj yeem yog ib feem ntawm tsuas yog ib qho sib xyaw ntawm ib lub sijhawm.
Kuj paub, muaj pes tsawg hom kev sib raug zoo nyob rau hauv chav kawm daim duab?
Pre-set connector hom Koj muaj nws, 8 kev sib raug zoo uas muaj nyob nruab nrab ntawm chav kawm . Kev kos duab thiab tsim qauv Cov duab kos duab yog ib tug tiag tiag cinch nrog Creately.
Koj piav ib daim duab qhia li cas?
Hauv software engineering, a chav kawm daim duab hauv Unified Modeling Language (UML) yog hom qauv zoo li qub daim duab uas piav txog cov qauv ntawm ib qho system los ntawm kev qhia qhov system chav kawm , lawv cov cwj pwm, kev ua haujlwm (lossis cov txheej txheem), thiab kev sib raug zoo ntawm cov khoom.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm qhov sib txawv hauv ICT?
Tshaj Tawm Ntau Yam Hloov Kho Lub Npe Cov Lus Qhia Loj Cov Cim Cim thiab / lossis cov lej me me. 1byte int Integer 4bytes bool Boolean tus nqi, tuaj yeem nqa ob qhov tseem ceeb 'True' lossis 'False 1bit ntab ntab ntab taw tes tus lej 4bytes
Dab tsi yog qhov sib txawv ntawm cov ntaub ntawv sib sau ua ke thiab cov ntaub ntawv tsis sib xws?
Kev sib sau cov ntaub ntawv yog sau thiab sau cov ntaub ntawv; kom disaggregate cov ntaub ntawv yog rhuav tshem cov ntaub ntawv sib sau ua ke rau hauv cov khoom siv lossis cov ntaub ntawv me me
Dab tsi yog qhov sib txawv ntawm cov qauv siv nyob rau hauv cov ntaub ntawv ntawm cov khoom oriented qauv?
Cov qauv tseem ceeb ntawm cov qauv uas siv rau hauv cov khoom siv yog: Siv cov qauv qauv, Cov qauv qauv (zoo li qub) cov qauv, Cov qauv coj tus cwj pwm (dynamic) khoom qauv
Dab tsi yog qhov qub txeeg qub teg Dab tsi yog qhov sib txawv ntawm qhov qub txeeg qub teg piav nrog piv txwv?
Inheritance yog ib txoj hauv kev kom tau txais cov yam ntxwv thiab kev coj cwj pwm ntawm ib chav kawm los ntawm lwm chav kawm. Cov chav kawm uas cov tswv cuab tau txais qub txeeg qub teg yog hu ua chav kawm hauv paus, thiab chav kawm uas tau txais cov tswv cuab tam sim no hu ua chav derived. Inheritance siv IS-A kev sib raug zoo
Dab tsi yog qhov sib txawv tseem ceeb ntawm kev sib txuas lus tsis sib xws thiab kev sib txuas lus taw qhia?
1. Hauv kev sib txuas lus tsis muaj kev sib txuas lus tsis tas yuav tsim kev sib txuas ntawm qhov chaw (sender) thiab qhov chaw (receiver). Tab sis nyob rau hauv kev sib txuas-taw qhia kev sib txuas lus kev sib txuas lus yuav tsum tau tsim ua ntej hloov cov ntaub ntawv